JP2020184280A - Collision avoidance system - Google Patents

Abstract

To provide a collision avoidance system preventing an unintentional operation error of a driver from happening with warning through detecting a foot position before the driver presses down a pedal.SOLUTION: A collision avoidance system warns a driver by sending information on which one of an accelerator pedal 1, a brake pedal 3, and a clutch pedal 4 is pressed down, or where a foot position is placed to press down any one of the pedals by detecting a foot position of a driver or a pedal pressed down with a sensor. Thereby, confirmation of an intentional operation or an unintentional operation of the driver is achieved. In this way, the operation error is prevented. Warning is done through a sound warning and a visual display warning, and a vibration warning, more particularly, warning by optionally combining any of warnings or using a single warning selected from them.SELECTED DRAWING: Figure 1

Description

The present invention relates to a device for preventing erroneous operation of an automobile.

In recent years, it has frequently occurred that an accident occurs due to an operation error while driving a car. An object of the present invention is to warn an operation and eliminate an erroneous operation. In particular, in order to prevent accidents caused by mistaken depression of the accelerator pedal and brake pedal, the driver is warned of which pedal position the foot is in or which pedal is being depressed before depressing the pedal. To prevent erroneous operation. It is difficult to visually check the pedal position by shifting the line of sight from the front while driving a car, and visually recognizing it is dangerous because the line of sight must be moved from the front and the front cannot be watched. It is possible. We would like to put into practical use a device that issues a warning to the driver to recognize which pedal has the foot position before or during pedal depression to prevent accidents.

The present invention detects the position of the driver's foot with a sensor, detects which pedal position the foot is at or which pedal is being depressed, warns the driver, and performs the intended operation. It relates to a device that recognizes the existence and prevents an error in pedal depression. By giving a warning before the driver depresses the pedal, it is possible to prevent a situation in which a driver makes a mistake and is upset and cannot make a normal judgment and runs out of control. In addition, it is possible to detect the pedal being depressed and give a necessary warning to the driver from the detected state by a computer or the like to tell the driver to perform a safe driving operation.

Japanese Unexamined Patent Publication No. 58-214428, Japanese Patent Application Laid-Open No. 2013-201840

Nissan Diz Vehicle Sales Catalog 2019 Edition

An object of the present invention is to detect and warn the position of the foot before the driver steps on the pedal to prevent an unintended erroneous operation by the driver. Once the driver makes an erroneous operation, he / she is upset and it becomes difficult to escape from the erroneous operation and return to the normal operation, resulting in a serious accident in many cases. The position of the driver's foot is detected, and the position where the driver's foot is located is warned and recognized to prevent erroneous operation. The foot position may be reliably detected by using a known method. When the pedal is being depressed, which pedal is being depressed is detected by the existing sensor information of the vehicle or a switch, or by a sensor provided as necessary. The detection method of the sensor is a known method. As a result, a warning is issued to the driver, the driver is made aware of what kind of operation is being performed, erroneous operation is prevented, and the occurrence of an accident is suppressed.

The position of the driver's foot and the pedal being depressed are detected by a sensor, and which pedal is depressed on each of the accelerator pedal, brake pedal, and clutch pedal, or the position of the foot is in which pedal is depressed. Warning and tell the driver. This allows the driver to confirm whether the operation is intended or unintended. Visually checking the position of the foot while driving is dangerous because the driver's field of vision must be removed, and it is not possible to actually check it. It warns the driver of the position of the foot and which pedal is being depressed, and makes the driver aware of the intended operation to prevent erroneous operation.

Especially in recent years, many traffic accidents have occurred due to erroneous operation, and precious human lives are often lost, which is a very worrying situation. The present invention warns the driver of a vehicle of the content of the operation to be performed or warns of the operation being performed to prevent erroneous operation, prevent the occurrence of an accident, and lose precious human life. I want to prevent it. In particular, it is a device that can be easily and inexpensively modified and installed on existing vehicles so as to reduce accidents as much as possible, even if it is not an expensive automatic driving or danger avoidance device equipped at the time of a new vehicle. It is an object of the present invention to reduce accidents and has an effect of suppressing accidents.

FIG. 1 is a diagram showing an embodiment of the first embodiment. FIG. 2 is a diagram showing an embodiment of the second embodiment. FIG. 3 is a diagram showing an embodiment of the third embodiment.

For detecting the position of the driver's foot, microswitch, photo interrupter, ultrasonic sensor, pyroelectric infrared sensor, camera image sensor, potentiometer, rotary switch, Hall element, reed switch, reflective or transmissive photo Use a known sensor such as a sensor. Any sensor may be used other than those illustrated. For the detection of the pedal being operated, the sensors and switch signals already installed in the vehicle can be diverted, or the necessary sensors can be added. When the position of the foot comes to the accelerator pedal, a warning such as "accelerator" is given, when using the brake pedal, a warning such as "brake" is given, and when using the clutch pedal, a warning such as "clutch" is given. In particular, when a pyroelectric infrared sensor is used for foot detection, when the foot comes to a predetermined position of the pedal or when the pedal is stepped on deeper, the movement can be detected and warned. In addition, if the accelerator pedal is depressed deeply on a slope or a highway and there is no movement of the foot, it will not be detected and an unnecessary warning will not be issued. Furthermore, it is possible to issue more types of alarms by making a judgment process by a computer using a sensor signal provided in the vehicle.

The warning to the driver is given by a voice warning, a visual display warning, and a vibration warning, and each warning is given in any combination, or a single warning is used. The voice alarm can be given by changing the volume as necessary, or by changing the sound quality so that the driver can easily recognize it. It is also good to change the interval at which warnings are issued in order to raise awareness. The warning texts and words of voice alarms and visual display alarms can be any expression as long as the driver can understand where the foot is or which pedal is being depressed. It is also good to be able to select the language that suits you. Further, instead of the language, a chime sound, a siren sound, a buzzer sound, or the like may be used. The visual display alarm is displayed by characters, sentences, pictograms, lights, etc. on a display device or the like. It is also effective to change the blinking, brightness, contrast, display graphic, characters, sentences, etc. as necessary for the visual display alarm. If the same detection continues after the sensor detects the foot position and issues a warning, it is not necessary for driving to gradually increase the time interval for issuing the warning and reduce the volume, brightness, contrast, etc. for a certain period of time or longer. It is effective to reduce the provision of information and concentrate on driving operations. On the contrary, when it is necessary to give a strong warning, the time interval of the warning is shortened and the volume is increased, and the visual display alarm is made to be strongly recognized by blinking or the like by increasing the brightness, contrast and display contents. In order to appeal to the sense of touch in addition to the visual and auditory senses, it is also preferable to provide a seat vibration warning device in the seat to issue a vibration alarm.

FIG. 1 is a diagram showing a basic implementation method of the apparatus of the present invention. The pedals are an accelerator pedal 1, a brake pedal 3, and a clutch pedal 4. All pedals are provided with a pedal rotation fulcrum 2 for rotating when the pedal is depressed. A pyroelectric infrared sensor 7 is provided on each pedal, and when the toe enters the detection range 11, the toe is detected by the potential change of the pyroelectric infrared sensor 7. As for the detection range of the pyroelectric infrared sensor 7, the detection range 11 is set by an appropriate visual field limiting diaphragm 6 or lens 5, and the range in which the toes can be detected is stepped on or an attempt is made to step on a single pedal. Limited to the range. The detection signal of the pyroelectric infrared sensor 7 is input to each recording / playback module 8, reproduces the recorded sound or language, and is input to the voice amplifier 9. The voice amplifier 9 amplifies the input signal and emits sound or language from the speaker 10 to give a warning.

The recording / playback module 8 provided for each pedal gives a warning of the content corresponding to the pedal. For example, when the pyroelectric infrared sensor 7 of the accelerator pedal 1 detects, the recording / playback module 8 issues an alarm of the content of operating the “accelerator”, and the speaker 10 issues a warning via the voice amplifier 9. Similarly, when the pyroelectric infrared sensor 7 of the brake pedal 3 detects, an alarm for operating the "brake" is issued, and when the pyroelectric infrared sensor 7 of the clutch pedal 4 detects, the "clutch" is released. Issue an alarm for the content to be operated. Corresponding to each pedal, a different alarm is issued for each pedal to give an alarm according to the function of the pedal. Although the recording / playback module 8 is provided for each pedal, 20 multi-channel recording / playback modules capable of recording / playing back a plurality of sounds can be used to give different alarms for each pedal.

In this way, the pyroelectric infrared sensor 7 that detects each pedal is provided, and the content recorded in the recording / playback module 8 that can record / play in response to the detection of each pedal is passed through the amplifier 9. Is emitted from the speaker 10. By issuing a warning on the display device 12 at the same time or individually, the driver is visually informed of which pedal is being depressed or which pedal is being depressed, and erroneous operation is prevented. It should be noted that the display device 12 can be selected not to be provided in order to simplify the structure. Since the structure of this embodiment is particularly simple, it can be easily added to the vehicle in operation, so that the financial burden on the driver is small and a great effect can be expected in preventing accidents.

FIG. 2 is a diagram showing an implementation method different from that of the first embodiment. The arrangement of the sensors and the like of the apparatus of the present invention is shown, and since the basic configuration is the same as that of the first embodiment, the differences and the like will be described. The micro switch 13 is used as a substitute for the pyroelectric infrared sensor 7 to detect the depression of the clutch pedal 4, and when detected, it warns that the "clutch" has been operated. When the brake pedal 3 is stepped on, the brake lamp switch 21 of the vehicle detects that the brake lamp is lit and warns that the "brake" has been operated. Since the accelerator pedal 1 is the same as that of the first embodiment, the description thereof will be omitted. In this example, instead of the recording / playback module 8, a multi-channel recording / playback module 20 capable of selecting various words is used. The warning is emitted from the speaker 10 by amplifying the output of the multi-channel recording / playback module 20 by the voice amplifier 9. The sensors illustrated in this application do not limit the detection method or structure in order to collect the operation and necessary information. Any method other than those illustrated may be used as long as the purpose can be achieved. Since all sensors detect that they are being operated, voltage changes, current changes, or changes in voltage change time intervals, the number of changes in voltage per unit time (frequency), changes in resistance, and static. Changes in capacitance, changes in inductance, changes in magnetic flux, changes in electric charge, etc. are detected and processed by a known method. Even if the detection method is changed in this way, the same detection can be performed.

FIG. 3 is a diagram showing a structure for diverting a sensor already provided in the vehicle to detect an operation to perform detection and give a finer warning. If the contents described in the first embodiment are duplicated, they will be omitted. Instead of the pyroelectric infrared sensor 7 provided on the accelerator pedal 1 shown in the first embodiment, the signal of the existing throttle valve opening sensor 14 that detects the opening degree of the throttle valve and controls the engine is used. Using this sensor signal, a signal corresponding to the throttle opening, that is, the amount of depression of the accelerator pedal 1 is input to the computer 16 directly or as throttle valve opening data via the multi-channel AD converter 15. When the brake pedal 3 is depressed, the signal of the brake lamp switch 21 for lighting the brake lamp is input to the computer 16. When the clutch pedal is depressed, the change in voltage due to the opening and closing of the switch 13 provided on the clutch pedal 4 is input to the computer 16. Sensors will be added to vehicles that are not provided with these switches 13. For the detection of the traveling speed, a sensor signal for displaying the speed is diverted to the speedometer 17 provided in the vehicle. This signal is arithmetically processed by the computer 16 and the traveling speed is used as data. Since the transmission shift position neutral sensor 18 outputs a signal for detecting the shift position neutrality in a vehicle equipped with an automatic transmission, this is diverted. For vehicles with manual transmissions and vehicles with automatic transmissions that do not output a shift position neutral signal, this detection is omitted or a separate sensor is provided for detection. The acceleration data output from the acceleration sensor 19 is input to the computer 16 via the multi-channel AD converter 15 or directly.

The types of warnings are "acceleration", "sudden acceleration", "braking", "sudden braking", "empty braking", and "no engine braking". The alarm is a voice alarm, a visual display alarm, and a vibration alarm, and the voice text and display for communicating the content of the warning type to the driver are limited to this example as long as the content can be accurately communicated to the driver. It's not something to do. In addition, other warnings may be added if necessary.

The warnings issued by the computer 16 can be played by giving appropriate warnings to the separate recording / playback modules 8 or by selecting and playing the required sentences using the multi-channel recording / playback module 20 that records a plurality of sentences. good. The computer 16 is programmed so that each warning is issued under the following conditions. The computer 16 may use a sequencer, a one-chip microcomputer, or a logic circuit as an alternative.

The "acceleration" warning is issued when the signal of the throttle valve opening sensor 14 is a relatively small specified value or more and the acceleration sensor 19 detects acceleration of the specified value or less from the idling state. The warning of "rapid acceleration" is issued when the signal of the throttle valve opening sensor 14 is a relatively large specified value or more and the acceleration sensor 19 also detects acceleration of a specified value or more. However, even if the throttle valve opening is large, no warning is issued when the acceleration sensor 19 is below the specified value. The running state at such a time is judged to be running under a high load such as when climbing a slope or on an expressway. The "braking" warning is issued when the brake pedal 3 is stepped on and the brake light is turned on. The "sudden braking" warning is issued when the braking light is turned on and the value of the acceleration sensor is equal to or higher than the specified value. The warning of "empty" is that the transmission shift position neutral sensor 18 detects the neutral position, or the clutch pedal 4 is depressed, the switch 13 detects the pedal depression, and the throttle valve opening sensor 14 further detects the pedal depression. It is emitted when it is above a relatively small specified value. The warning of "engine brake not used" is that the transmission shift position neutral sensor 18 detects the neutral position, or the clutch pedal 4 is depressed, the switch 13 detects the depression of the clutch pedal 4, and the brake pedal 3 is further depressed. It is emitted when the switch 13 is activated and the brake light is continuously lit for a specified time or longer and the brake pedal 3 is continuously depressed for a specified time or longer.

When the depression detection of the brake pedal 3 and the signal of the throttle valve opening sensor 14 detect a value equal to or higher than the specified value, there is a high possibility that the driver has made an erroneous operation, so the warning of "acceleration" is given priority. Emit. When the depression detection of the brake pedal 3 and the signal of the throttle valve opening sensor 14 detect a value equal to or higher than the specified value when "acceleration" is set, there is a high possibility that the driver has mistakenly operated and is out of control. Therefore, the warning of "rapid acceleration" is given priority. Further, when the value of the acceleration sensor 19 is acceleration and the signal of the speedometer 17 indicates an increase in speed in determining the "sudden acceleration" state, a "sudden acceleration" warning is given. At the time of the "rapid acceleration" warning, it is preferable to give a warning by the seat vibration warning device 22 provided on the seat seating surface 23 in combination with the vibration warning. When an alarm is required via the computer 16, the vibration alarm amplifies the output by the amplifier 24 and operates the seat vibration warning device 22 to transmit the vibration to the seat to draw attention.

Recently, many traffic accidents caused by erroneous operations have occurred, and precious human lives are often lost, which is a very worrying situation. The present invention warns the driver of the vehicle before performing the operation, or warns and recognizes the operation content being operated to prevent erroneous operation. We want to recognize the operation status, prevent erroneous operation, suppress the occurrence of accidents, and eliminate accidents that lose precious human lives. In particular, it is also a device that can be easily and inexpensively modified and installed on existing vehicles so that accidents can be eliminated even if it is not an expensive automatic driving or danger avoidance device that is installed in new vehicles, and this is popularized. The purpose of the present invention is to reduce accidents.

1 Accelerator pedal 2 Pedal rotation fulcrum 3 Brake pedal 4 Clutch pedal 5 Lens 6 Field limiting aperture plate 7 Focused infrared sensor 8 Recording / playback module 9 Voice amplifier 10 Speaker 11 Detection range 12 Display device 13 Switch 14 Throttle valve opening sensor 15 Multi-channel AD converter 16 Computer 17 Speedometer 18 Transmission shift neutral position sensor 19 Acceleration sensor 20 Multi-channel recording / playback module 21 Brake lamp switch 22 Seat vibration warning device 23 Seat seating surface 24 Amplifier

Claims (2)

Based on various sensor detection information installed in the vehicle, it warns the driver what kind of operation he / she is trying to perform or is performing. The warning is given by a voice alarm, a visual display alarm, and a vibration alarm, and a collision avoidance warning device that warns by combining each alarm in an arbitrary manner or by using a single alarm. The voice alarm warns by changing the volume as necessary or changing the sound quality so that the driver can easily recognize it. The interval at which warnings are issued should also be changed to increase awareness. The warning texts and words of voice warnings and visual display warnings can be expressed in any way as long as the content can be understood by the driver as to what the driver is doing or trying to do. It is also good to be able to select a different language. The visual display alarm is displayed by characters, sentences, pictograms, lights, etc. on a display device or the like. The visual display alarm strongly appeals by changing the blinking, brightness, contrast, display graphic, characters, sentences, etc. as necessary. After the sensor detects the foot position and issues a warning, if the same detection continues, it is not necessary for driving to gradually increase the time interval for issuing the warning and reduce the volume, brightness, contrast, etc. for a certain period of time or longer. It is effective to reduce the provision of information and concentrate on driving operations. On the contrary, when it is necessary to give a strong warning, the time interval of the warning is shortened and the volume is increased, and the visual display alarm is made to be strongly recognized by blinking or the like by increasing the brightness, contrast and display contents. In order to appeal to the sense of touch other than sight and hearing, a seat vibration warning device is installed on the seat seating surface to issue a vibration warning. When a strong warning is given, the driver vibrates on the seating surface to make the driver strongly recognize the warning. In this way, a collision avoidance warning device that prevents erroneous operation by warning and recognizing the driver's operation with a voice alarm, a visual display alarm, and a vibration alarm.